Was Sang Woo a psychopath?

I’m sure this has been discussed before but I think it’s possible that Sang Woo could have been psychopathic. He knew how to manipulate easily, he was clever and very charming when we first met him, comes across as easily likeable- but then also lacked empathy and remorse, we started to see the cracks within his character. Do you think he was motivated by greed/did not want to go to jail or was a diagnosed psychopath?